/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:30,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:30,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:30,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:30,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:30,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:30,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:30,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:30,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:30,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:30,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:30,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:30,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:30,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:30,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:30,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:30,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:30,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:30,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:30,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:30,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:30,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:30,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:30,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:30,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:30,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:30,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:30,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:30,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:30,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:30,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:30,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:30,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:30,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:30,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:30,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:30,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:30,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:30,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:30,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:30,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:30,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:02:31,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:31,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:31,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:31,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:31,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:31,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:31,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:31,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:31,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:31,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:31,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:31,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:31,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:31,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:31,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:31,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:31,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:31,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:31,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:31,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:31,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:31,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:31,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:31,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:31,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:31,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:31,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:31,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:31,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:31,501 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:31,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2020-10-27 01:02:31,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00569598e/50690aeb2e5448ea88ebb0491586d7d3/FLAGc8ec4d1e5 [2020-10-27 01:02:32,282 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:32,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2020-10-27 01:02:32,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00569598e/50690aeb2e5448ea88ebb0491586d7d3/FLAGc8ec4d1e5 [2020-10-27 01:02:32,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00569598e/50690aeb2e5448ea88ebb0491586d7d3 [2020-10-27 01:02:32,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:32,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:32,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:32,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:32,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:32,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:32" (1/1) ... [2020-10-27 01:02:32,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9632c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:32, skipping insertion in model container [2020-10-27 01:02:32,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:32" (1/1) ... [2020-10-27 01:02:32,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:32,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:32,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:32,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:33,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:33,020 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:33,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33 WrapperNode [2020-10-27 01:02:33,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:33,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:33,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:33,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:33,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... [2020-10-27 01:02:33,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:33,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:33,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:33,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:33,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-27 01:02:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-27 01:02:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:02:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-27 01:02:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-27 01:02:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:02:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:34,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:34,046 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:02:34,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:34 BoogieIcfgContainer [2020-10-27 01:02:34,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:34,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:34,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:34,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:34,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:32" (1/3) ... [2020-10-27 01:02:34,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319b32be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:34, skipping insertion in model container [2020-10-27 01:02:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:33" (2/3) ... [2020-10-27 01:02:34,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319b32be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:34, skipping insertion in model container [2020-10-27 01:02:34,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:34" (3/3) ... [2020-10-27 01:02:34,058 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2020-10-27 01:02:34,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:02:34,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:02:34,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:02:34,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:02:34,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:02:34,120 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:02:34,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:02:34,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:02:34,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:02:34,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:02:34,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:02:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-27 01:02:34,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:02:34,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:34,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:34,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash 980170601, now seen corresponding path program 1 times [2020-10-27 01:02:34,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:34,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885563407] [2020-10-27 01:02:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:02:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:02:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-27 01:02:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:02:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:02:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:34,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:34,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:02:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:34,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:02:34,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:02:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 01:02:34,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:02:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:02:34,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:02:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:02:35,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885563407] [2020-10-27 01:02:35,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:02:35,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030630869] [2020-10-27 01:02:35,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:02:35,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:02:35,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:02:35,030 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-10-27 01:02:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:35,331 INFO L93 Difference]: Finished difference Result 133 states and 216 transitions. [2020-10-27 01:02:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:02:35,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:02:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:35,343 INFO L225 Difference]: With dead ends: 133 [2020-10-27 01:02:35,344 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 01:02:35,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:02:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 01:02:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-27 01:02:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 01:02:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2020-10-27 01:02:35,397 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 23 [2020-10-27 01:02:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:35,397 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2020-10-27 01:02:35,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:02:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2020-10-27 01:02:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:02:35,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:35,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:35,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:02:35,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:35,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1159049452, now seen corresponding path program 1 times [2020-10-27 01:02:35,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:35,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058722820] [2020-10-27 01:02:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:02:35,480 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:02:35,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:02:35,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:02:35,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:02:35 BoogieIcfgContainer [2020-10-27 01:02:35,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:02:35,516 INFO L168 Benchmark]: Toolchain (without parser) took 2874.10 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 74.6 MB in the end (delta: 58.3 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:35,517 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:35,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.57 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 119.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:35,520 INFO L168 Benchmark]: Boogie Preprocessor took 65.83 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 116.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:35,521 INFO L168 Benchmark]: RCFGBuilder took 959.37 ms. Allocated memory is still 157.3 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:35,522 INFO L168 Benchmark]: TraceAbstraction took 1461.18 ms. Allocated memory is still 157.3 MB. Free memory was 114.4 MB in the beginning and 74.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:35,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.57 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 119.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.83 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 116.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 959.37 ms. Allocated memory is still 157.3 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1461.18 ms. Allocated memory is still 157.3 MB. Free memory was 114.4 MB in the beginning and 74.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 172, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [L173] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L173] RET, EXPR fmod_double(x, y) [L173] double res = fmod_double(x, y); [L176] CALL, EXPR isnan_double(res) [L18] return x != x; [L176] RET, EXPR isnan_double(res) [L176] COND TRUE !isnan_double(res) [L177] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1121b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 10 SDslu, 78 SDs, 0 SdLazy, 94 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...